Rule 34 Dev - 2018 anal anal_sex anthro anthro_on_feral balls big_dom_small_sub bit_gag blush bondage bound canine deep_penetration domination donkey elbestia equine feral feral_penetrating_anthro forced gag gagged internal interspecies male male_domination mammal pain penetration penis rape rough_sex sex size_difference submissive submissive_male tears wolf yaoi zoophilia|3007007016